What is the purpose of the data manipulation in the PHP code provided?

The purpose of the data manipulation in the PHP code provided is to convert a given date string from one format to another. This can be achieved using PHP's date and strtotime functions to parse the original date string and then format it into the desired output format.

// Original date string
$dateString = '2022-01-15';

// Parse the original date string and format it into the desired output format
$newDateString = date('d/m/Y', strtotime($dateString));

// Output the new date string
echo $newDateString;